San Francisco Bay area earthquake swarm migrates toward the major Calaveras Fault

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75 quakes have rattled the beautiful town of Danville – you remember ‘Mrs. Doubtfire’ – last week? The shallow quakes hit at a depth of 5-7 km (3-4 mi) on a unmapped fault or set of faults. Although most of the quakes in this week’s swarm are 3-5 km (2-3 mi) from the Calaveras Fault, the swarm is clearly migrating toward the major Calaveras Fault.

Danville earthquake swarm migrates toward Calaveras Fault, san francisco bay area earthquake swarm heads toward major fault
The Danville earthquake swarm migrates quietly toward the major Calaveras Fault: The red quakes struck in the past 24 hours, the green quakes over the past week, making the southward migration obvious. via Tremblor

With a slip rate of about 15 mm/yr (0.6 in/yr) and a length of about 100 km (60 mi), the Calaveras is highly active and certainly capable of a M7+ earthquake. The fault cuts through the towns of Walnut Creek, San Ramon, Dublin, Pleasanton, Sunol, and Hollister.

Danville earthquake swarm migrates toward Calaveras Fault, san francisco bay area earthquake swarm heads toward major fault
Danville and Mount Diablo in California: Danville in California was hit by more than 75 earthquakes in February 2018. via Danville.ca.gov

The largest historical quake on the Calaveras Fault was a M6.6 earthquake in 1911. At that time, most U.S. seismic observatories were run by scientist priests at Jesuit universities. But by the time these professors began to die in mid-century, their lifelong seismogram archives were thrown out. Only one 1911 seismogram from the U.S. survived, from the University of St. Louis, which was saved by Prof. John Ebel, former director of the Weston Observatory of Boston College.

Danville earthquake swarm migrates toward Calaveras Fault, san francisco bay area earthquake swarm heads toward major fault
Mrs Doubtfire: an explosive comedy. © 20th Century Fox

Swarms likely light up portions of faults that suddenly begin to creep or slip at a much higher rate than usual. Some 600 quakes struck San Ramon, also near the Calaveras Fault, in October 2015. Another swarm struck the central portion of the Calaveras Fault in April 2016. But neither triggered a larger shock. Most faults do not creep at all, but parts of the San Andreas, Hayward and Calaveras all do. Why faults start and stop creeping is a mystery, but most swarms and creep events do not cascade into larger earthquakes.

Nevertheless, should this swarm penetrate the Calaveras Fault, the chances of a larger shock will climb, and the monitoring vigilance will intensify. If you live or work in the East Bay, this is the time to ask yourself if you are quake ready. This means having an emergency kit and plan, securing your contents, retrofitting an older home, and considering insurance.

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via Geoscience World and Tremblor

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9 Comments

  2. Or the earthquakes happened due to seismic pressure and pressure transfers. Not everything is related to alien activity. Alot of it is normal growing pains of the Earth. Take it from the best and most accurate on line forcaster in the bussiness. Dutchsinse.com on his you tune channel…

  5. 1~2 days ago, there was a tornado in Kentucky, and several people died. There was NO news! They like to hide this Earth change as much as possible! 2 of my favorite Youtube channels reporting extreme weather and the Earth changes were mysteriously removed recently. All the news on TV are all scripted FAKE news with trained and paid crisis actors. I myself does not have TV. Whoever visit our house is wonder and say “You don’t have TV?”. Whenever I saw TV somewhere, there are full of shape-shifters, and I fed up!

    There was also massive M7.5 earthquake in Papua New Guinea. US government geologist for secret underground bases, Phil Schneider mentioned he used to help US government to build secret underground bases in Papua New Guinea. For US government, they do NOT have boundaries or borders. They can build anything on any country. I bet this massive earthquake happened because Galactic Forces cleaned up their secret underground bases in Papua New Guinea.

  6. Clean up! Clean up! Time to clean up! Every secret base is cleaned up!
    It is fun time to see their secret underground bases are cleaned up!

    Today, still Galactic Federation of Light is busy cleaning up their secret underground bases along Diablo Rd.

    GFL is also busy cleaning up their secret underground bases around Cull Canyon Rd, Cull Creek, and TwiningVine Estate Winery. The tremors are concentrated in that small area with very shallow depth.

    “most U.S. seismic observatories were run by scientist priests at Jesuit universities” This means that we cannot trust their information. They are providing us 3rd dimensional MATRIX (=Illusion & Lies). All the earthquake “faults” might be their secret underground bases and tunnels. They knew at certain time, Galactic Forces comes to the Earth to clean up their secret bases. That is why they had better lie to the people “That is fault line. That is why so many earthquakes.”.

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